Abstract:
A subsea rotary gate valve comprising a valve body (110), wherein the valve body defines a fluid flow pathway (101), a closure member cavity (102), and a stem cavity (103), a closure member (120) disposed in the closure member cavity, and a stem (130) disposed in the stem cavity, wherein the stem is connected to the closure member and associated systems.
Abstract:
Method of improving the oxidative stability of a lubricating composition which is used to lubricate a spark ignition internal combustion engine, the spark- ignition engine being comprised within the powertrain of a hybrid electric vehicle, wherein the method comprises the step of introducing into the combustion chamber of the spark-ignition engine a gasoline composition wherein the gasoline composition comprises a hydrocarbon base fuel containing 10 to 20% v olefins, not greater than 5% v olefins of at least 10 carbon atoms, and not greater than 5% v aromatics of at least 10 carbon atoms, based on the base fuel, initial boiling point in the range 30 to 40°C, T10 in the range 45 to 57°C, T50 in the range 82 to 104°C, T90 in the range 140 to 150°C and final boiling point not greater than 220 °C.
Abstract:
A subsea system comprising: a riser; an eductor, wherein the eductor is fluidly connected to the riser by a suction line and a mixed fluid line; and a chemical injector, wherein the chemical injector is fluidly connected to the riser and associated methods.
Abstract:
The present invention provides an apparatus for measuring the quantity of hydrogen supplied to hydrogen users comprising a first flow control means (1), a second flow control means (2), a third flow control means (3); a first line (4), a second line (5), a first hydrogen flow meter (6), a second hydrogen flow meter (7), a third line (8) a fourth line (9); an interconnector line (10) and a hydrogen supply means (12). The present invention also provides a process which improves the certainty and accuracy of knowing how much hydrogen is delivered to a hydrogen user by taking multiple partial quantity measurements in different sequences and for different durations during the supply of the hydrogen user, using the apparatus of the present invention, which comprises a first hydrogen flow meter (6) and a second hydrogen flow meter (7), wherein the flow of hydrogen through the apparatus is controlled by a first flow control means (1), a second flow control means (2) and a third flow control means (3).
Abstract:
The present invention provides an apparatus for measuring the quantity of hydrogen supplied to hydrogen users comprising a first flow control means (1), a second flow control means (2), a third flow control means (3), a fourth flow control means (4), a first line (5), a second line (6), a first hydrogen flow meter (7), a second hydrogen flow meter (8), a third line (9), a fourth line (10), an interconnector line (11) and a hydrogen supply means (12). The present invention also provides a process which improves the certainty and accuracy of knowing how much hydrogen is delivered to a hydrogen user by taking multiple partial quantity measurements in different sequences and for different durations during the supply of the hydrogen user, using the apparatus of the present invention, which comprises a first hydrogen flow meter (6) and a second hydrogen flow meter (7), wherein the flow of hydrogen through the apparatus is controlled by a first flow control means (1), a second flow control means (2), a third flow control means (3) and a fourth flow control means (4).
Abstract:
Implementations of the disclosed subject matter provide a process for producing ethylene glycol from a carbohydrate feed. The process may include contacting, in a reactor under hydrogenation conditions, the carbohydrate feed with a bi-functional catalyst system which may include a heterogeneous hydrogenation catalyst including a magnetically active metal, and a soluble retro-Aldol catalyst including tungstate. A liquid effluent stream may be obtained from the reactor and may include hydrogenation catalyst particles and tungsten oxide precipitate particles. The hydrogenation catalyst particles may be magnetically separated from the tungsten oxide precipitate particles in the liquid effluent stream using a magnet in a separation vessel. The separated hydrogenation catalyst particles may be retained in a separation zone in the separation vessel and may be subsequently removed from the separation zone. A liquid product stream may be obtained from the separation vessel and may include the tungsten oxide precipitate particles and ethylene glycol.
Abstract:
The present invention provides a process for producing liquid hydrocarbon products from a feedstock comprising at least one of a solid biomass-containing feedstock and a solid biomass-derived feedstock and in the range of from 50 to 15000 ppmw of chlorides, said process comprising the steps of: a) incorporating a chloride trap material into said feedstock to provide a combined feedstock/chloride trap material; b) densifying the combined feedstock/chloride trap material to form densified feed in the form of pellets or briquettes; c) contacting said densified feed with a hydropyrolysis catalyst composition and molecular hydrogen in a hydropyrolysis reactor vessel at a temperature in the range of from 350 to 600°C and a pressure in the range of from 0.50 to 7.50 MPa to produce a product stream comprising a deoxygenated hydrocarbon product, H 2 O, H 2 , CO 2 , CO, C 1 - C 3 gases, char and catalyst fines; and d) removing all or a portion of said char and catalyst fines from said product stream.
Abstract:
Implementations of the disclosed subject matter provide a process for producing ethylene glycol and propylene glycol from a sorbitol feed which may include contacting the sorbitol feed with hydrogen in a reactor in the presence of a solvent and a bi-functional catalyst system. The bi-functional catalyst system may include a first catalyst comprising a copper compound, a zinc compound, and an additional metal compound and a second catalyst comprising sodium carbonate.
Abstract:
Processes and associated reaction systems for the oxidative dehydrogenation of ethane are provided. In particular, a process is provided that comprises supplying a feed gas comprising ethane and oxygen to a multitubular fixed-bed reactor, allowing the ethane and oxygen to react in the presence of an oxidative dehydrogenation catalyst to yield a reactor effluent comprising ethylene; supplying a coolant to an upstream region of an interior shell space of the reactor in a flow pattern that is counter-current with the flow of the feed gas; and withdrawing the coolant from the upstream region and supplying at least a portion of the coolant withdrawn from the upstream region to the downstream region in a flow pattern that is co-current with the flow of the feed gas.
Abstract:
A process of preparing a catalyst composition which process comprises the steps of (a) treating ZSM-5 zeolite with an alkaline solution having a pH of at least (8) followed by ion exchange to obtain a treated zeolite, (b) extruding a mixture of the treated zeolite and binder and contacting the zeolite with a fluorocompound containing solution, (c) increasing the temperature of the extrudates obtained in step (b) to at least 200 °C, and (d) combining the extrudates obtained in step (c) with one or more metals selected from the group consisting of Group (10) and (11) of the IUPAC Periodic Table of Elements and a process for the conversion of an aromatic hydrocarbons containing feedstock using a catalyst composition prepared by such process.